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//: IOStreamDemo.java
// Typical IO Stream Configurations
import java.io.*;
import com.bruceeckel.tools.*;
public class IOStreamDemo {
  public static void main(String[] args) {
    try {
      // 1. Buffered input file
      DataInputStream in =
        new DataInputStream(
          new BufferedInputStream(
            new FileInputStream(args[0])));
      String s, s2 = new String();
      while((s = in.readLine())!= null)
        s2 += s + "\n";
      in.close();
      // 2. Input from memory
      StringBufferInputStream in2 =
          new StringBufferInputStream(s2);
      int c;
      while((c = in2.read()) != -1)
        System.out.print((char)c);
      // 3. Formatted memory input
      try {
        DataInputStream in3 =
          new DataInputStream(
            new StringBufferInputStream(s2));
        while(true)
          System.out.print((char


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